/// <summary> Builds a derivation document expression. </summary>
/// <returns> The document expression to use. </returns>
public string BuildDerivationExpression(DerivationSeed seed)
{
return(String.Format
(
".Frontend.Derive('{0}', '{1}', '{2}', '{3}', {4})",
seed.Query.Replace("'", "''"),
seed.PageType,
seed.MasterKeyNames,
seed.DetailKeyNames,
Convert.ToString(seed.Elaborate).ToLower()
));
}
protected XmlDocument BuildInterface(Program program, DerivationSeed seed)
{
return(new InterfaceBuilder(program, seed).Build());
}
public override object InternalExecute(Program program, object[] arguments)
{
string query = (string)arguments[0];
string pageType = DefaultPageType;
string masterKeyNames = String.Empty;
string detailKeyNames = String.Empty;
bool elaborate = DefaultElaborate;
if (arguments.Length >= 2)
{
if (Operator.Operands[1].DataType.Equals(program.DataTypes.SystemString))
{
pageType = (string)arguments[1];
if (arguments.Length == 3)
{
elaborate = (bool)arguments[2];
}
else if (arguments.Length >= 4)
{
masterKeyNames = (string)arguments[2];
detailKeyNames = (string)arguments[3];
if (arguments.Length == 5)
{
elaborate = (bool)arguments[4];
}
}
}
else
{
elaborate = (bool)arguments[1];
}
}
FrontendServer server = FrontendServer.GetFrontendServer(program.ServerProcess.ServerSession.Server);
FrontendSession session = server.GetFrontendSession(program.ServerProcess.ServerSession);
DerivationSeed seed = new DerivationSeed(pageType, query, elaborate, masterKeyNames, detailKeyNames);
XmlDocument document;
if (session.UseDerivationCache)
{
lock (session.DerivationCache)
{
session.EnsureDerivationCacheConsistent();
DerivationCacheItem item;
if (!session.DerivationCache.TryGetValue(seed, out item))
{
document = BuildInterface(program, seed);
session.DerivationCache.Add(seed, new DerivationCacheItem(document));
}
else
{
document = item.Document;
}
}
}
else
{
document = BuildInterface(program, seed);
}
return(document.OuterXml);
}
